Public bug reported:
Normal behavior, as far as I understand, is for all applications to have
the same sound volume unless you lower the volume for one manually in
the applications section of the sound settings. However, some
applications have their own own volume control that only affect the
volume of themselves and the global output volume, not other
applications. This can put those other applications below the global
volume where they become stuck.
An example: you have the output volume at 50%. Rhythmbox is locked to
output volume and is also at 50%. Then you open a movie in totem. Sound
volume is low for that movie so you use totem's volume slider to
increase volume to 100%. When done you close totem and use the media
keys on the keyboard to lower the volume back to 50%. Since rhythmbox
stayed at 50% instead of following to 100%, it got stuck at half of
global volume and after lowering is now down to 25%. It can never go
above 50% with just the normal volume controls, you need to go into the
applications section of the sound menu and move its volume slider to
reset it to the same value as the global output volume.
This is especially a problem since you might increase the global volume
a lot in order to compensate for low volume, only for a newly opened
application to start playing sound at way too high a volume, a danger to
your ears and possibly your sound hardware. And a novice user is likely
to not understand what's wrong with their audio all of a sudden, and
feel forced to reboot to fix it.
The same thing happens with the volume control in vlc so it's not just
totem.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1773198
Title:
Sound volume for applications can become locked below global output
volume.
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